.btn-group {
  margin-top: 25px;
  .detail-btn {
    float: right;
    width: 150px;
    height: 40px;
    margin-left: 30px;
    color: #ffffff;
    font-size: 18px;
    &.purchase-btn {
      background-color: #ff6700;
    }
    &.add-to-cart-btn {
      background-color: #f20;
    }
  }
}